Composite electric system.



MQ d? R. M. EATON. COMPOSITE ELECTRIC SYSTEM. APPUCATION AFILED APR. l5,i909 l Patente@ May 11, 1915.

R. M. EATON.

` COMPOSITE VELECTRIC SYSTEM.v APPLICATION FILED AFR.15,'1909,

Patented May 11, 1915.

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RICHARD MAX EATON, OF NIAGARA FALLS, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE GARFOBD MANUFACTURING COMPANY, OF ELYRIA, OHIOs A.

CORPORATION OF OHIO.

COMPOSITE ELECTRIC SYSTEM.

T0 all 117mm, it muy concern:

Be it known that l., Riciiaiu) MAX EATON, a citizenotl the UnitedStates, residing at Niagara Falls, in the county of Niagara and State ofNew York, have invented certain new and useful .Improvements inComposite Electric Systems; and l do hereby declare the following to bea full, clear, and exact description ot' the invention, such as willenable those skilled in the art to which it appertains to make and usethe same.

The invention relates to improvements in composite systems where atelephone and police system are combined.

In general ,the purposes are to provide a system in which the mainstation may be signaled from the various subf'stations; to provide atelephone circuit not interl'ering with this; and to provide means forsignalhaving lenses in its walls.

'the central station.

ing an itinerant attendant, such as a patrolman upon his beat. Toaccomplish the latter, I use a signal either placed within `orcontrolled by apparatus placed within a protecting casing and locatedadjacent the route of the attendant. The signal l employ is bright andattractive, such for example as an incandescent lamp within acasing,These signals may be seen from a great distance and when operatedattract the attendant to the box in which telephones are placed. Thesignals are placed under control of the attendant at They are controlledover the conductorsi'of the telephone circuit without incapacitating theconductors and apparatus for the other operations for which they areused. The telephone and the apparatus for controlling the signalslocated at the sub-stations areplaced in pr`otecting casings. I preferto place the lamps and lenses in said boxes also.

Other objects of" my invention are t0 provide these circuits in anon-interfering, operative way, with a minimumnumber of conductors.

My invention will be best understood vby reference to the followingdescription when taken in connection with the accompanyingillustrations, showing one speciic embodiment thereof, while its scopewill be more particularly pointed out in the appended l claims.

Figure 1 is a View of the circuits used.

Seria1No.490,100.

the door open, showing the apparatus within. Fig. 3 is a. side elevationwith the door closed. I

Referring to Fig. 1, the metallic line conductors are shown at 2, and 3,which, together with the ground, constitute the main lines ofthe system.The central station is shown at A with substations C and DAny number ofsubstations maybe included. The main 8 is normally connected to groundat the central station through the electromagnet llland battery B. Ateach'stat-ion the main 3 may be grounded, through legs 12 by closing thenormally open. switches 13-43. Betweeirmains 2 and 3 telephone sets 15,15 are normally in open bridges 14, 14. Other bridges 1G containing thehigh resistance and impedence relay 17, are connected in parallel withthe telephone sets at each substation. These relays control contacts1.8-19 which are interposed in the circuit of the lamps 20 which may bebridged across the( electric light mains 21 and 22 or placed in a localcircuit. At the central station, the mains 2..and 3 terminate in theswitch springs 23 and24 which normally engage with contacts 25 and 26,but which, when sprung outward, are adapted to engage the terminals 27and 28 ofthe central station* talking set 29 whichi-is connected throughthe leads 30 and 31 to terminals 27 and 28. A battery B2 and aninduction coil 3u in series are bridged across these leads and supplycurrent for talking purposes. The contacts 25 and 26 are connected byconductors 35 and 36 with other switch springs 233 and 34. The spring 34normally engages with a terminal 37 of the grounded battery B. Thelatter springs when separated, engage terminals 38 and 39 of the batteryiB. A source of current 42 is placed in the light circuit.

Figs. 2 and 3' show a case 41 in which are housed the' telephone set15,v push button 13, relay 17, the signal lamp 20 and the signaltransmitter 4. The front of the casing is hinged and carries a lighttransmitting lens 40. Other similar lenses are placed in the sides ofthe case. I contemplate the'use of siinilar lenses in other parts of thecase, as my purpose in using them is to distribute the light so that itmay be seen from all direc Wisemodied so as to readily attractattention.

The operation of my system is as Jfollows: When the sub desires to callthe central for talking, the button 13 is pressed until it con tactsWith 43, closing circuit GLAS-18- 12 3- -2i 26-aes711-BG. Y Thisenergizes the magnet 11 and throws the drop. The central operator thenthrows a lever or button (not shown) in such a Way that the springs 23and 24 disengage 25 and 26 and contact With27 and 28. This interruptsthe circuit just traced, cutting oit' the line signal and bridging theoperators set 15 acrossthe mains 2 and 3. W'hen the substation removesthe receiver, a talking circuit is completed as "ows: 29-31-27-2-1%15-3-21-28-3029. Current is supplied by battery B2 through theinduction coil 32 whose function is to choke out the variations in thebattery current. Should the central station, or the chief at the policestation, as the case may be, have reasons for calling the patrolman, forinstance, when notice of the commission of some crime has been. reportedand 1t is desired to notify all the policemen in order that they mayeXer cise vigilance in endeavoring to intercept the criminal, he may doso by throwing the lever in the opposite direction. The followingcircuit Will then be closed: B-39-3el-36- 26-24--3-16-172-23-25-35-33-38--B- This energizes the magnet 17 to close switches 1S-19 andcompletes the circuit of the lamp 20. Magnets 17 are made of such ti'rhresistance that the energy of the battery B2 is insuflicient to operatethem While their impedence is high enough to prevent shortvcircuitingthe telephone current. 40 When the lamps 20 are illuminated, lighttransmitted through the lenses to the vari- 'lous quarters of thehorizon will attract the attention of the patrolmen or others authorizedto answer, who will proceed to the telephone for instructions.

While I have described my system as used by a police department,obviously, I may employ it for any analogous purpose where itinerentpersons or out-door stations are to be called and conversed with, suchfor eXam ple as railway employees along a railway,

Watchmen and the like. x

Other forms of signal may be used, and

it is obvious to those skilled in the .art that numerous and extensivedepartures fromA of substations, telephone talking sets at substationsoperating over said system, a single pair of conductors connecting allof the talking sets of said stations, lamp signals at said substationsand self-restoring means at the f substations connected to theconductors independently of the talking sets connections controllingsaid lamp, said means being adapted to be simultaneously controlled bythe attendant at the main station over said pair of conductors.

2. In av composite system, the combination of a main station, aplurality of substations, a pair of conductors connecting said stations,telephone sets at the substa tions connected to the conductors, anormally non-luminous signal at each substation controlled over saidconductors, selfre'storing means connected to the conductors at thesubstations independently of the telephone sets and means at the mainstation for simultaneously operating the self-restoring means at thesubstations.

3. In a composite electric system, a central station, substations,metallic conductors connecting the central and substations, telephonesets at the substations and means to bridge said telephone sets acrosssaid metallic conductors, a self-restoring signal controlling means ateach substation connected to said metallic conductors independently ofthe telephone sets, said signal restoring means being impervious totelephone currents, a signal at each station controlled by the signalcontrolling means thereat, and when actuated visible from a plurality ofquarters, and mechanism for simultaneously operating said signalcontrolling means from the central station.

et. In a composite system, the combination of a main station, aplurality of substations, a pair of metallic conductors connecting saidstations, a telephone set at each substation, a bridge at cachsubstation between the metallic conductors in which the substationthereat is connected, a lamp signal at each substation, a self-restoringrelay at each substation controlling the lamp thereat and connected tothe conductors independently of the telephone sets and. mechanism at themain station for controlling the simultaneous actuation and retirementof said lamp controlling means at the substations.

5. In a composite system, the combination of a main station and aplurality of substations, a pair of conductors connecting said stations,a telephone set at each substation connected to said conductors, a lampsignal at each substation, means to supply current to said lamp signals,self-restoring means at the substations controlling said lamp signals,said lamp signal controlling means being connected to said conductorsindependently'of the talking sets, mechanism at the main station forcausing the simultaneous stations, a telephone set and a bridge of saidconductors in which said telephone set is connected at each substation,a lamp signal vat each substation, means including circuit conductorsfor su plying. current to the lamp signals, a sel -restoring relay ateach substation connected to said line conductors independently of thetelephone sets, said relays controlling the lamp signals and beingself-restoring, mechanism at the central station for supplying currentto simultaneously actuate the relays at the substations, and means atthe main station for interrupting the supply of current to said relays,whereby the are permitted to self-restore themselves and7 cause theretirement of the lamp signals.

7. In a composite system, the combination ofl a main station and aplurality of substations, a pair of line conductors connecting saidstations, a telephone set at each substal tion, a bridge of said lineconductors. at eachl substation in which the telephone set thereat isconnected, a lamp signal ateach substation, means including currentconductors for supplying current to said lamp signals, "a

self-restorin switch for each lamp in-'its current con uctors, a magnetat each substation controlling the switch of the lam Vatthe substations,a second bridge of theV e i conductors ,at each substation inwhich the.

magnet thereat is connected, means at the main station for supplyingcurrent to said magnets and thereby causingl the simultane ous actuationof said magnets at the various substations on the line conductors andmeans for interrupting the ow of current to said magnets, whereby theyare simultaneously self-restored and releasing the lamp controllingswitches, thereby simultaneously restoring the lamps. p

In testimony whereofl I aix my signature in presence of two witnesses. vI

i RICHARD MAX EATON.

Witnesses:

GEO. J. Rrcxnn'r, v S'rAsm BAKER.

